Electrical steel sheet
US10190219B2 · kind B2 · utility
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2References
2Claims
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Key dates
| Filing date | Dec 21, 2015 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/74
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrical steel sheet (1) includes a base material (2) of electrical steel, and an insulating film (3) formed on a surface of the base material (2). The insulating film (3) contains a phosphate of one or more selected from the group consisting of Al, Zn, Mg and Ca. A proportion of an amount by mole (mol) of Fe atoms relative to an amount by mole (mol) of P atoms in the insulating film (3) is more than 0.1 but not more than 0.65.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.